The Dynaco ST-70 is one of the most popular tube amplifiers ever. First released in 1959, it's still sought after by hi-fi enthusiasts today.

A frequency compensation technique for MOS audio power amplifiers is presented that allows the frequency compensation capacitors around the power transistors to be smaller than the circuit parasitics ...

That’s because the P-100C features not one but four identical and discrete LIFES-centred amplifier circuits – two per channel – to allow it to operate in four different modes. And back to the press ...

This Pre-Amplifier circuit is a minimalistic design, a.o. inspired by valve design, which should help sound clarity. With 5 transistors, it has 0.1% distortion (expected from 60dB loop gain) up to ...

Unlock the potential of the TDA2003 with a high-efficiency 10W audio amplifier circuit designed for clean and powerful sound output. This simple yet effective design ensures optimal performance ...

This high-resolution audio amplifier delivers exceptional sound quality with a simple yet efficient circuit design. Engineered for powerful performance, it enhances audio output with clarity and ...

FiiO K17 is a cutting-edge desktop DAC and headphone amplifier designed for audiophiles seeking superior sound quality and powerful output. Packed with advanced features and state-of-the-art ...

The result is a nicely-illuminated set of power meters on this vintage Technics amp. We’ve seen some neat LED swaps in the past, too, including this tricky motorcycle lamp upgrade.